Bijma, J.; Altabet, M.; Conte, Maureen H.; Kinkel, H.; Versteegh, G. J. M.; Volkman, J. K.; Wakeham, S. G.; Weaver, P. P. (2001): Primary signal; ecological and environmental factors; report from Working Group 2. American Geophysical Union and The Geochemical Society, United States, Geochemistry, Geophysics, Geosystems - G (super 3), 2 (1), georefid:2001-048489